This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 2 | 0 |
| 3 | 3 |
| 4 | 16 |
| 5 | 15 |
| 6 | 454 |
| 7 | 22 |
| 8 | 446 |
| 9 | 108 |
| 10 | 4260 |
| 11 | 75 |
| 12 | 170053 |
| 13 | 100 |
| 14 | 34393 |
| 15 | 9357 |
| 16 | 27982 |
| 17 | 362 |
| 18 | 14979714 |
| 19 | 685 |
| 20 | 3062899 |
| 21 | 59131 |
| 22 | 1599447 |
| 23 | 1372 |
| 24 | 1052029701 |
| 25 | 10484 |
| 26 | 7028048 |
| 27 | 98336 |
| 28 | 69058060 |
| 29 | 3926 |